i had my electrician install the wiring and breaker systems for my hot tub. we used a gfi 50 amp gfi into the fusebox. i have a used cameo 850 hot tub by sundance.

i filled the tank properly, turned the disconnect on and the tub came on and began to heat. the temperature is climbing (currently at 76 deg) the pool is showing one jet on low and water is moving - slowly. however, anytime i try to change the jets setting to turn them on or up - the breaker blows???

the store personel told me this model has a freeze setting when the water temp gets low, low. he said that should stop happening when the temp gets above 80?

does any of this make since?